fix python-poetry#8704 validate source while do All set!

src/poetry/console/commands/check.py

@@ -1,6 +1,9 @@
 from __future__ import annotations
 
+from collections import defaultdict
+from functools import reduce
 from typing import TYPE_CHECKING
+from typing import Any
 
 from cleo.helpers import option
 
@@ -88,6 +91,40 @@ def _validate_readme(self, readme: str | list[str], poetry_file: Path) -> list[s
                 errors.append(f"Declared README file does not exist: {name}")
         return errors
 
+    def _validate_dependencies_source(self, config: dict[str, Any]) -> list[str]:
+        """Check dependencies's source are valid"""
+        dependencies_source: dict[str, set[str]] = defaultdict(set)
+        all_sources = {k["name"] for k in config.get("source")}
+        errors = []
+
+        # scan root dependencies and group dependencies
+        dependencies_refs = [config.get("dependencies", {})] + [
+            group.get("dependencies", {}) for group in config.get("group", {}).values()
+        ]
+
+        for dependency_ref in dependencies_refs:
+            for dependency in dependency_ref:
+                if isinstance(dependency_ref[dependency], dict):
+                    dependencies_source[dependency].add(
+                        dependency_ref[dependency].get("source", None)
+                    )
+
+        all_referenced_sources = reduce(
+            lambda i, j: i | j, dependencies_source.values()
+        )
+        if all_referenced_sources not in all_sources:
+            errors.extend([
+                f"Invalid source {source} referenced in dependencies"
+                for source in all_referenced_sources - all_sources
+            ])
+
+        if k := [k for k in dependencies_source if len(dependencies_source[k]) > 1]:
+            errors.extend([
+                f"Dependency {k} referenced with multiple sources" for k in k
+            ])
+
+        return errors
+
     def handle(self) -> int:
         from poetry.factory import Factory
         from poetry.pyproject.toml import PyProjectTOML
@@ -108,6 +145,8 @@ def handle(self) -> int:
             errors = self._validate_readme(config["readme"], poetry_file)
             check_result["errors"].extend(errors)
 
+        check_result["errors"] += self._validate_dependencies_source(config)
+
         # Verify that lock file is consistent
         if self.option("lock") and not self.poetry.locker.is_locked():
             check_result["errors"] += ["poetry.lock was not found."]